Writing instrument



FIG. 1 is a right side perspective view taken from the front, side andbelow showing my new design;

FIG. 2 is a right side elevational view, the left side elevational viewbeing a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The ornamental design for a “writing instrument,” as shown anddescribed.